Finding the Fourth Proportional to 12,164.61, 16,789.77 and 7,685.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,164.61 : 16,789.77 = 7,685.52 : x
2. Step 2: Convert to fraction form
   12,164.61/16,789.77 = 7,685.52/x
3. Step 3: Cross multiply
   12,164.61x = 16,789.77 × 7,685.52
4. Step 4: Simplify right side
   12,164.61x = 129,038,113.13
5. Step 5: Solve for x
   x = 129,038,113.13/12,164.61
6. Step 6: Final answer
   x = 10,607.67